[English] 日本語
Yorodumi
- EMDB-44597: Human proton sensing receptor GPR4 in complex with miniGs -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: EMDB / ID: EMD-44597
TitleHuman proton sensing receptor GPR4 in complex with miniGs
Map dataHuman proton sensing receptor GPR4 in complex with miniGs
Sample
  • Complex: Complex of GPR4 bound to Gs heterotrimer
    • Protein or peptide: miniGs
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
    • Protein or peptide: Nb35
    • Protein or peptide: G-protein coupled receptor 4
KeywordsReceptor / Proton-sensor / G protein / SIGNALING PROTEIN
Function / homology
Function and homology information


glomerular mesangial cell development / regulation of vascular permeability / Class A/1 (Rhodopsin-like receptors) / response to acidic pH / angiogenesis involved in wound healing / positive regulation of Rho protein signal transduction / regulation of cell adhesion / negative regulation of angiogenesis / G protein-coupled receptor activity / Olfactory Signaling Pathway ...glomerular mesangial cell development / regulation of vascular permeability / Class A/1 (Rhodopsin-like receptors) / response to acidic pH / angiogenesis involved in wound healing / positive regulation of Rho protein signal transduction / regulation of cell adhesion / negative regulation of angiogenesis / G protein-coupled receptor activity / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G protein-coupled acetylcholine receptor signaling pathway / adenylate cyclase-activating G protein-coupled receptor signaling pathway / G-protein activation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / positive regulation of inflammatory response / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / Glucagon signaling in metabolic regulation / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / photoreceptor disc membrane / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / ADP signalling through P2Y purinoceptor 1 / G beta:gamma signalling through PI3Kgamma / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / adenylate cyclase-activating dopamine receptor signaling pathway / GPER1 signaling / Inactivation, recovery and regulation of the phototransduction cascade / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / heterotrimeric G-protein complex / G alpha (12/13) signalling events / sensory perception of taste / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / GTPase binding / Ca2+ pathway / retina development in camera-type eye / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / fibroblast proliferation / G alpha (i) signalling events / G alpha (s) signalling events / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (q) signalling events / Ras protein signal transduction / Extra-nuclear estrogen signaling / cell population proliferation / G protein-coupled receptor signaling pathway / lysosomal membrane / GTPase activity / synapse / protein-containing complex binding / signal transduction / extracellular exosome / membrane / plasma membrane / cytosol / cytoplasm
Similarity search - Function
G protein-coupled receptor 4 orphan / G-protein, gamma subunit / G-protein gamma subunit domain profile. / G-protein gamma-like domain / G-protein gamma-like domain superfamily / GGL domain / G protein gamma subunit-like motifs / GGL domain / Guanine nucleotide-binding protein, beta subunit / G-protein, beta subunit ...G protein-coupled receptor 4 orphan / G-protein, gamma subunit / G-protein gamma subunit domain profile. / G-protein gamma-like domain / G-protein gamma-like domain superfamily / GGL domain / G protein gamma subunit-like motifs / GGL domain / Guanine nucleotide-binding protein, beta subunit / G-protein, beta subunit / G-protein coupled receptors family 1 signature. / G protein-coupled receptor, rhodopsin-like / GPCR, rhodopsin-like, 7TM / G-protein coupled receptors family 1 profile. / 7 transmembrane receptor (rhodopsin family) / G-protein beta WD-40 repeat / WD40 repeat, conserved site / Trp-Asp (WD) repeats signature. / WD domain, G-beta repeat / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily
Similarity search - Domain/homology
G-protein coupled receptor 4 / Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 / Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
Similarity search - Component
Biological speciesHomo sapiens (human) / Lama glama (llama)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.8 Å
AuthorsHoward MK / Hoppe N / Huang XP / Macdonald CB / Mehrotra E / Rockefeller Grimes P / Zahm AM / Trinidad DD / English J / Coyote-Maestas W / Manglik A
Funding support United States, 6 items
OrganizationGrant numberCountry
Chan Zuckerberg Initiative United States
Howard Hughes Medical Institute (HHMI) United States
The Vallee Foundation Inc. United States
National Institutes of Health/National Cancer Institute (NIH/NCI) United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)5T32GM139786 United States
National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI)F31HL164045 United States
CitationJournal: Cell / Year: 2025
Title: Molecular basis of proton sensing by G protein-coupled receptors.
Authors: Matthew K Howard / Nicholas Hoppe / Xi-Ping Huang / Darko Mitrovic / Christian B Billesbølle / Christian B Macdonald / Eshan Mehrotra / Patrick Rockefeller Grimes / Donovan D Trinidad / ...Authors: Matthew K Howard / Nicholas Hoppe / Xi-Ping Huang / Darko Mitrovic / Christian B Billesbølle / Christian B Macdonald / Eshan Mehrotra / Patrick Rockefeller Grimes / Donovan D Trinidad / Lucie Delemotte / Justin G English / Willow Coyote-Maestas / Aashish Manglik /
Abstract: Three proton-sensing G protein-coupled receptors (GPCRs)-GPR4, GPR65, and GPR68-respond to extracellular pH to regulate diverse physiology. How protons activate these receptors is poorly understood. ...Three proton-sensing G protein-coupled receptors (GPCRs)-GPR4, GPR65, and GPR68-respond to extracellular pH to regulate diverse physiology. How protons activate these receptors is poorly understood. We determined cryogenic-electron microscopy (cryo-EM) structures of each receptor to understand the spatial arrangement of proton-sensing residues. Using deep mutational scanning (DMS), we determined the functional importance of every residue in GPR68 activation by generating ∼9,500 mutants and measuring their effects on signaling and surface expression. Constant-pH molecular dynamics simulations provided insights into the conformational landscape and protonation patterns of key residues. This unbiased approach revealed that, unlike other proton-sensitive channels and receptors, no single site is critical for proton recognition. Instead, a network of titratable residues extends from the extracellular surface to the transmembrane region, converging on canonical motifs to activate proton-sensing GPCRs. Our approach integrating structure, simulations, and unbiased functional interrogation provides a framework for understanding GPCR signaling complexity.
History
DepositionApr 24, 2024-
Header (metadata) releaseJan 15, 2025-
Map releaseJan 15, 2025-
UpdateFeb 19, 2025-
Current statusFeb 19, 2025Processing site: RCSB / Status: Released

-
Structure visualization

Supplemental images

emd_44597.png

Downloads & links

-
Map

FileDownload / File: emd_44597.map.gz / Format: CCP4 / Size: 91.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationHuman proton sensing receptor GPR4 in complex with miniGs
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.86 Å/pix.
x 288 pix.
= 247.68 Å		0.86 Å/pix.
x 288 pix.
= 247.68 Å		0.86 Å/pix.
x 288 pix.
= 247.68 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.86 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.7
Minimum - Maximum-4.7723713 - 7.495401
Average (Standard dev.)-0.0010727711 (±0.160935)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions288288288
Spacing288288288
CellA=B=C: 247.68001 Å
α=β=γ: 90.0 °

-
Supplemental data

-
Additional map: Additional map

Fileemd_44597_additional_1.map
AnnotationAdditional map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

-
Half map: Half Map B

Fileemd_44597_half_map_1.map
AnnotationHalf Map B
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

-
Half map: Half Map A

Fileemd_44597_half_map_2.map
AnnotationHalf Map A
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

-
Sample components

-
Entire : Complex of GPR4 bound to Gs heterotrimer

EntireName: Complex of GPR4 bound to Gs heterotrimer
Components
  • Complex: Complex of GPR4 bound to Gs heterotrimer
    • Protein or peptide: miniGs
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
    • Protein or peptide: Nb35
    • Protein or peptide: G-protein coupled receptor 4

-
Supramolecule #1: Complex of GPR4 bound to Gs heterotrimer

SupramoleculeName: Complex of GPR4 bound to Gs heterotrimer / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Homo sapiens (human)

-
Macromolecule #1: miniGs

MacromoleculeName: miniGs / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 30.137025 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: GGSLEVLFQG PSGNSKTEDQ RNEEKAQREA NKKIEKQLQK DKQVYRATHR LLLLGADNSG KSTIVKQMRI LHGGSGGSGG TSGIFETKF QVDKVNFHMF DVGGQRDERR KWIQCFNDVT AIIFVVDSSD YNRLQEALNL FKSIWNNRWL RTISVILFLN K QDLLAEKV ...String:
GGSLEVLFQG PSGNSKTEDQ RNEEKAQREA NKKIEKQLQK DKQVYRATHR LLLLGADNSG KSTIVKQMRI LHGGSGGSGG TSGIFETKF QVDKVNFHMF DVGGQRDERR KWIQCFNDVT AIIFVVDSSD YNRLQEALNL FKSIWNNRWL RTISVILFLN K QDLLAEKV LAGKSKIEDY FPEFARYTTP EDATPEPGED PRVTRAKYFI RDEFLRISTA SGDGRHYCYP HFTCAVDTEN AR RIFNDCR DIIQRMHLRQ YELL

-
Macromolecule #2: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1

MacromoleculeName: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 40.786566 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MHHHHHHLEV LFQGPEDQVD PRLIDGKGSS GSELDQLRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIY AMHWGTDSRL LVSASQDGKL IIWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR E GNVRVSRE ...String:
MHHHHHHLEV LFQGPEDQVD PRLIDGKGSS GSELDQLRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIY AMHWGTDSRL LVSASQDGKL IIWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR E GNVRVSRE LAGHTGYLSC CRFLDDNQIV TSSGDTTCAL WDIETGQQTT TFTGHTGDVM SLSLAPDTRL FVSGACDASA KL WDVREGM CRQTFTGHES DINAICFFPN GNAFATGSDD ATCRLFDLRA DQELMTYSHD NIICGITSVS FSKSGRLLLA GYD DFNCNV WDALKADRAG VLAGHDNRVS CLGVTDDGMA VATGSWDSFL KIWN

UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1

-
Macromolecule #3: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2

MacromoleculeName: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 7.56375 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString:
MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFC

UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2

-
Macromolecule #4: Nb35

MacromoleculeName: Nb35 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Lama glama (llama)
Molecular weightTheoretical: 15.398067 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
QVQLQESGGG LVQPGGSLRL SCAASGFTFS NYKMNWVRQA PGKGLEWVSD ISQSGASISY TGSVKGRFTI SRDNAKNTLY LQMNSLKPE DTAVYYCARC PAPFTRDCFD VTSTTYAYRG QGTQVTVSSG SEDQVDPRLI DGK

-
Macromolecule #5: G-protein coupled receptor 4

MacromoleculeName: G-protein coupled receptor 4 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 42.280852 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: DYKDDDDASI DMGNHTWEGC HVDSRVDHLF PPSLYIFVIG VGLPTNCLAL WAAYRQVQQR NELGVYLMNL SIADLLYICT LPLWVDYFL HHDNWIHGPG SCKLFGFIFY TNIYISIAFL CCISVDRYLA VAHPLRFARL RRVKTAVAVS SVVWATELGA N SAPLFHDE ...String:
DYKDDDDASI DMGNHTWEGC HVDSRVDHLF PPSLYIFVIG VGLPTNCLAL WAAYRQVQQR NELGVYLMNL SIADLLYICT LPLWVDYFL HHDNWIHGPG SCKLFGFIFY TNIYISIAFL CCISVDRYLA VAHPLRFARL RRVKTAVAVS SVVWATELGA N SAPLFHDE LFRDRYNHTF CFEKFPMEGW VAWMNLYRVF VGFLFPWALM LLSYRGILRA VRGSVSTERQ EKAKIKRLAL SL IAIVLVC FAPYHVLLLS RSAIYLGRPW DCGFEERVFS AYHSSLAFTS LNCVADPILY CLVNEGARSD VAKALHNLLR FLA SDKPQE MANASLTLET PLTSKRNSTA KAMTGSWAAT PPSQGDQVQL KMLPPAQ

UniProtKB: G-protein coupled receptor 4

-
Experimental details

-
Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

-
Sample preparation

BufferpH: 6
VitrificationCryogen name: ETHANE

-
Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 60.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.1 µm / Nominal defocus min: 1.0 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

-
Image processing

Startup modelType of model: NONE
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 439296
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

+
About Yorodumi

-
News

-
Feb 9, 2022. New format data for meta-information of EMDB entries

New format data for meta-information of EMDB entries

  • Version 3 of the EMDB header file is now the official format.
  • The previous official version 1.9 will be removed from the archive.

Related info.:EMDB header

External links:wwPDB to switch to version 3 of the EMDB data model

-
Aug 12, 2020. Covid-19 info

Covid-19 info

URL: https://pdbj.org/emnavi/covid19.php

New page: Covid-19 featured information page in EM Navigator.

Related info.:Covid-19 info / Mar 5, 2020. Novel coronavirus structure data

+
Mar 5, 2020. Novel coronavirus structure data

Novel coronavirus structure data

Related info.:Yorodumi Speices / Aug 12, 2020. Covid-19 info

External links:COVID-19 featured content - PDBj / Molecule of the Month (242)：Coronavirus Proteases

+
Jan 31, 2019. EMDB accession codes are about to change! (news from PDBe EMDB page)

EMDB accession codes are about to change! (news from PDBe EMDB page)

  • The allocation of 4 digits for EMDB accession codes will soon come to an end. Whilst these codes will remain in use, new EMDB accession codes will include an additional digit and will expand incrementally as the available range of codes is exhausted. The current 4-digit format prefixed with “EMD-” (i.e. EMD-XXXX) will advance to a 5-digit format (i.e. EMD-XXXXX), and so on. It is currently estimated that the 4-digit codes will be depleted around Spring 2019, at which point the 5-digit format will come into force.
  • The EM Navigator/Yorodumi systems omit the EMD- prefix.

Related info.:Q: What is EMD? / ID/Accession-code notation in Yorodumi/EM Navigator

External links:EMDB Accession Codes are Changing Soon! / Contact to PDBj

+
Jul 12, 2017. Major update of PDB

Major update of PDB

  • wwPDB released updated PDB data conforming to the new PDBx/mmCIF dictionary.
  • This is a major update changing the version number from 4 to 5, and with Remediation, in which all the entries are updated.
  • In this update, many items about electron microscopy experimental information are reorganized (e.g. em_software).
  • Now, EM Navigator and Yorodumi are based on the updated data.

External links:wwPDB Remediation / Enriched Model Files Conforming to OneDep Data Standards Now Available in the PDB FTP Archive

-
Yorodumi

Thousand views of thousand structures

  • Yorodumi is a browser for structure data from EMDB, PDB, SASBDB, etc.
  • This page is also the successor to EM Navigator detail page, and also detail information page/front-end page for Omokage search.
  • The word "yorodu" (or yorozu) is an old Japanese word meaning "ten thousand". "mi" (miru) is to see.

Related info.:EMDB / PDB / SASBDB / Comparison of 3 databanks / Yorodumi Search / Aug 31, 2016. New EM Navigator & Yorodumi / Yorodumi Papers / Jmol/JSmol / Function and homology information / Changes in new EM Navigator and Yorodumi

Read more